public static void SetExtraSignDataFromTag(this NdefHandler handler, Tag tag)
{
if (tag == null)
{
handler.ClearExtraSignData();
return;
}
byte[] uid = tag.GetId();
string[] techs = tag.GetTechList();
byte[] nuid = new byte[uid.Length + 1];
Buffer.BlockCopy(uid, 0, nuid, 0, uid.Length);
if (techs.Contains(Java.Lang.Class.FromType(typeof(MifareUltralight)).CanonicalName))
{
nuid[uid.Length] = 0xAA;
}
else if (techs.Contains(Java.Lang.Class.FromType(typeof(MifareClassic)).CanonicalName))
{
nuid[uid.Length] = 0xBB;
}
else
{
nuid = uid;
}
handler.SetExtraSignData(nuid);
}